Mounting for paper guide shield fingers of corrugating facer



H. MElSTER Oct. 10, 1967 MOUNTING FOR PAPER GUIDE SHIELD FINGERS OF CORRUGATING FACER 5 Sheets-Sheet 1 Filed 001:. 5, 1963 mvzuroa. Y HANS MEIS'TER Oct. 10, 1967 H. MEISTER 3,346,436

MOUNTING FOR PAPER GUIDE SHIELD FINGERS F CORRUGATING PACER Filed Oct. 5, 1965 Sheets-Sheet 2 FIGZ.

INVENTOR'. T 35, BY HANS MEISTER ATTYS,

Oct. 10, 1967 H. MEISTER 3,346,436

MOUNTING FDR PAPER GUIDE SHIELD FINGERS OF CORRUGATING PACER Filed Oct. 5, 1963 5 Sheets-Sheet 5 AT'T YS INVENTOR. MEISTER United States Patent 3,346,436 MOUNTING FOR PAPER GUIDE SHIELD FINGERS OF CORRUGATING FACER Hans Meister, Haddonfield, NJ assignor to The Langston Company, Camden, N.J., a corporation of New Jersey Filed Oct. 3, 1963, Ser. No. 313,574 11 Claims. (Cl. 156-473) This invention relates to a micrometer gang adjusting device for paper guide fingers in a corrugating single facer and has for an object the provision of improve ments in this art.

In the manufacture of faced corrugated board, with particular reference herein to what is known as single facer board, two corrugating rolls having intermeshing teeth form the smooth paperboard or paper web into corrugations which remain on the teeth of one of the corrugating rolls to travel past a glue applicator which coats the ends or crests of the corrugations with glue and then continue to remain on the teeth to travel past a facer roll which applies a smooth facing sheet of paperboard or paper web to the glue-coated crests of the corrugations.

These machines are provided with curved guide shield fingers which embrace part of the circumference of the second corrugating and carrying roll to strip the corrugating web from the first corrugating roll, to hold it securely on the second corrugating roll during glue applications, and finally to feed it to the facer applying roll.

The arcuate guide shield fingers are of a length to extend from a point near the nip between the corrugating rolls to a point near the nip between the second corrugating roll and the facer applying roll. The guide shield fingers are of sufiicient width radially to be strong enough to properly hold the springy corrugated paper web securely against the second corrugating roll; and they are quite narrow axially in order to be received in narrow grooves which are located at short axial spacings of an inch or two in the first corrugating roll and in the glue applying roll.

The fingers have an inside diameter equal to the radius of the second corrugating roll at the crest of a tooth plus the thickness of the paper which is being handled plus enough clearance to avoid binding. Where the apparatus is required to handle paper board of different thicknesses, say .006" to .012", the fingers will be formed with an inside radius designed for an intermediate thickness, say for .009" paper; then the fingers will very nearly fit the thickest and the thinnest paper to be handled.

At the nip between the second corrugating roll and the glue applicator roll the inner surface of the fingers has a slight recess or scallop to permit the crests of the paper corrugations to spring or fluff out slightly to receive the glue coating.

The above-mentioned finger shape and disposition is a design goal which is always sought but not often attained because of wear on the fingers and inadequate mountings to achieve proper locational positioning and adjustment of the fingers.

Accordingly it is an object of the present invention to provide a guide shield finger mounting which will properly locate the fingers in the grooves of the first corrugating roll and the glue applicator roll so they do not wear on the sides and interfere with the proper disposition of the glue.

Another object is to provide a finger mounting which will permit individual adjustment of each finger to fit the curve of the corrugated web supporting roll.

Another object is to provide a finger mounting which furnishes ready and precise adjustment of all of the plurality or gang of fingers relative to the carrying corrugated roll for different thicknesses of paper or finger wear, this adjustment to be attainable at an accessible exterior location so as to be made at any time, whether the machine is running or idle.

Another object is to provide a mounting which furnishes adjustment of one end of a gang of fingers relative to the other end, both radially and tangentially with reference to the carrying corrugated roll, so that the axis of the gang of fingers can be properly aligned with the axis of the corrugated roll.

Another object is to provide a mounting which holds the gang of fingers with strong resilient pressure toward a sto position associated with the corrugated roll, the pressure being separately adjustable for each end of the roll.

Another object is to provide a finger mounting which furnishes ready adjustment of the individual fingers at the nip of the glue applicator roll and corrugated roll, that is along the joining line between the axes of the glue applicator roll and the corrugated roll.

Another object is to provide a finger mounting with an adjustment indicator calibrated to the same scale as the paper thickness spacing, with adjustment to cancel out the allowance for wear of the inner surface of the fingers.

Another object is to provide a strong, sturdy and reliable finger mounting which will hold the fingers securely in proper position.

The above and other objects of the invention as well as various features of novelty and advantages will be apparent from the following description of an exemplary embodiment and a modification, reference being made to the accompanying drawings, wherein:

FIG. 1 is a vertical trans-axial section through apparar tus embodying the invention;

FIG. 2 is a shortened axial and generally vertical section taken on the line 22 of FIG. 1;

FIG. 3 is an enlarged shortened partial section taken on the line 33 of FIG. 1;

FIG. 4 is an enlarged vertical section taken on the line 44 of FIG. 2;

FIG. 5 is an enlarged partial vertical section taken on the line 5-5 of FIG. 1;

FIG. 6 is an enlarged elevational view of a detail, the view being taken on the line 6-6 of FIG. 2;

FIG. 7 is a plan view of a detail, the view being taken on the line 7-7 of FIG. 3;

FIG. 8 is a vertical section taken on the line 8-8 of FIG. 3;

FIG. 9 is a vertical section taken on the line 99 of FIG. 3;

FIG. 10 is a view similar to the middle portion of FIG. 3 but showing a modification.

As shown herein, most of the apparatus is carried between spaced vertical side frame members 20, 21 of a main frame of suitable character which is well-known in the art.

An infeeding plain paperboard Web W passes around an arcuate portion of a first toothed corrugating roll 22 into the nip where the corrugation-forming teeth of the roll 22 mesh with the teeth of a second corrugating roll 23 and where the paper web is corrugated. This nip will be referred to for brevity as the corrugating roll nip.

The corrugated web W is stripped from the first corrugating roll 22 by the reduced ends of a gang of guide shield fingers 25 fitting in annular grooves 24 of the roll 22, which fingers thereafter hold the corrugated web W1 closely upon the crests of the teeth of the roll 23 until the web is carried past a glue applicator roll 26 having grooves 27 receiving the fingers, the fingers extending beyond the glue applicator roll to a point near a line of centers CL1, referred to for brevity as the glue roll nip, the inner surface of the fingers is cut away or scalloped at 30 on a smaller radius to allow the crests of the corrugated sheet W1 to spring or fluff out to take the glue in known manner.

The apparatus as thus far described is entirely conventional. The improvements provided by the present invention relate to the mounting means for the gang of fingers and this will now be described.

The guide fingers as a group or gang are supported on a rigid transverse beam 32 having end flanges 33 secured by screws 34 to side plates 35 carried by journals 36 supported on the side frames 20, 21. The beam 32 is substantially parallel to the axes of all of the rolls, particularly with reference to the axis of the corrugated web-carrying roll 23.

It is to be noted that the axis of the journals 36 which carry the side plates 35, beam 32 and all of the fingers is located near but slightly below the extended joining line of centers CL-2 which passes through the axes of the corrugated rolls 22, 23. Due to this arrangement, when the entire swinging finger mounting assembly moves about the axis of the journals 36 the arc of the inner surface of the fingers will remain substantially concentric with the axis of the roll 23i.e., parallel to the surface of the crests of the corrugated paper carried on the teeth of the roll 23.

The beam swing mounting assembly is stabilized against side swing by means shown in FIGS. 1 and 5. One of the plates 35 is provided with an oversized hole 38 which embraces a sleeve 39 which is very slightly longer than the thickness of the plate 35, the sleeve being secured between washers 40 and the sleeve and washers being secured by a cap screw 41 to a frame side member 20. The washers are larger than the whole diameter whereby the side plate is guided for free movement here but without side swinging movement.

As shown in FIGS. 1, 2 and 4, each finger 25 is mounted on a holder which is generally designated by the numeral 44. The holder includes a clamp 45, secured by cap screws or bolts 46, which directly mounts the finger; and it may here be noted that before assembly in the operating machine it is helpful to mount the holder and fingers in a jig to place the arc and ends of the fingers in proper position to accurately fit the carrying cor rugated roll 23 when installed and in this position clamp them fast.

The clamp 45 is formed as part of a slide 47 mounted for guided movement on a base 48 and adjusted by a screw 49. The screw 49 is turnably mounted in an arm extension 50 of the slide and is threaded into the base 48. A nut 51 on the screw is brought into the desired position and made fast on the screw to act as a collar to prevent axial movement of the screw as it turns in adjusting the position of the slide 47. The slide 47 is provided with an elongated hole 52 for a clamp screw 53 which is threaded in the base 48 and lightly tightened to hold the slide firmly during adjustment.

The entire finger holder assembly 44 is secured to a flange 54 of the beam 32 by one or more cap screws 55 threaded in the base 48 and passing through oversized holes 56 in the beam flange 54. The oversize holes 56 provide for adjustment of the fingers axially of the rolls and for turning as necessary for the fingers to be centered in the grooves 24 of the first corrugating roll and the grooves 27 of the glue applicator roll.

The line of adjustment CL3 of the slide 47, as seen in FIG. 1, is substantially perpendicular to the line of centers CL-2 between the two corrugating rolls so that the finger moves along a radius R which almost passes through the center of arcuate length of the finger, hence in all adjusted movements the ends of the fingers 25 move about the same amount and the arc of the finger will substantially fit the arc of the roll.

It has been noted that the axes of the journals 36 are so located that the entire gang of fingers carried by the beam 32 will swing substantially along a median radius of the fingers. This corresponds very closely to the radius R. It will be noted from FIGS. 1, 2 and 6 that the journals 36 are separately carried on supporting shafts 58 turnably mounted in the frame side members 20, 21, the axes of the journals 36 being eccentric to the common axis of the shafts 58. As shown in FIG. 1, the line of eccentricity is substantially perpendicular to the line CL2 so that any movement of the journal axis due to turning of a shaft 58 will move one end of the beam and the gang of fingers along a line approximately parallel to the line CL-2 to adjust the concentricity of one end of the finger gang relative to one end of the roll 23.

In order to achieve this adjustment it is not necessary to make adjustments at both ends, an adjustment at one end being sufiicient. Accordingly, the shaft 58 at one end is provided with an integral end flange 59 which is secured to the frame member 20, as by cap screws 60.

At the other end the shaft 58 is held turnably in a fixed axial position by a ring 61 fitting in a groove 62 of the shaft and retained by cap screws 63. The shaft 58 is turned for adjustment by an arm 65 secured to the shaft 58, as by a drive pin 66, the arm having ears 67 with screws 68 threaded therein and the ends of the screws engaging a reaction stud pin 69 secured in the frame member 21. The adjusting action of this mechanism is obvious.

Means are provided for adjusting the entire swinging beam assembly mounted on the journals 36 to vary the position of the whole gang of fingers radially with reference to the carrying corrugated cylinder 23. This is the main adjustment for paper thickness and inside finger wear. The same means provides for adjusting'one end of the gauge assembly relative to the other end along the same radial line.

Part of this radial adjustment means includes resilient means urging the beam assembly inward toward the roll and against which inward limit stop adjustments are made. The resilient means comprises at each end an anchor block 71 secured to a frame member, 20 or 21, as by cap screws 72, a screw 73 being threaded in a block and having a reduced end 74 carrying spring elements, such as Belleville washers 75, and received in an oversized hole 76 in one of the side plates 35. A look nut 77 is threaded on the screw and engaging block 71. The Belleville washers 75 disposed between the back of the side plate 35 and the shoulder on the screw 73 provide a slight yield with considerable resistance to the outward movement of the side plates and adjustment can be made at either end at any time to vary this opposing force as. an aid in achieving separate adjustment at either end.

As shown in FIGS. 1 and 3, a wedge adjusting shaft 80 passes through close fitting holes in the frame side members 20, 21 and within oversized holes 81 in the plates 35 is cut out to flats 82 on which are secured wedge plates 83, as by screws 84. Mating wedges 85 are secured within the back side of the holes 81, as by screws 86. In the form shown in FIG. 3, shims 87 of varying number or thickness are provided behind the wedges 85 which by exchange in known manner furnish separate end adjustment for the assembly.

It will be clear that when the shaft 80 is moved endwise the interaction of the wedges 83, 85 will move the beam frame assembly about the journals 36 against the reaction of the Belleville washers 75 on the screws 73. The flats of the wedges 83, 85 prevent the shaft 80 from turning to any extent but the shaft can turn enough to compensate for the slight swing of the beam frame to keep the wedges flatly engaging in all adjusted positions.

Means are provided for adjusting the shaft endwise as desired, the means here shown comprising a screw shaft which is fixed in axial position and connected to the wedge shaft so as to move it axially. As shown in FIGS. 3, 7 and 8, a flanged bushing 91 is secured in a hole in the end of the shaft and is secured to the shaft, as by screws 92 passing through holes in the flange of the bushing which are threaded into the end of the shaft.

Outer interfitting flanged bushings 93, 94 are secured in a hole 95 in the frame member 21, as by screws 96 passing through flanges of the bushings 93, 94 and threaded in the frame member 21. -In a space left between the bushings 93, 94 there are provided thrust bearings 97 acting against an integral flange 98 carried by the screw shaft 90 to hold the shaft turnably in a fixed axial position.

Means are provided for turning the screw shaft 90 and locking it in adjusted position, the turning means comprising a hand wheel 100 secured on the shaft, as by a set screw 101. The holding means comprises a split clamp 102 mounted on fixed stud bolt 103, embracing a collar 104 made fast on the shaft, and a hand turned screw 105 for tightening the clamp when adjustment has been made.

Means are provided for indicating the position of the wedge shaft 80, the means shown in FIGS. 3 and 7 comprising a rod 107 secured in the flange of bushings 91 and passing through holes in the flanges of bushings 93, 94. On its outer end the rod carries a pointer block 108 held in adjusted positions on the rod by a set screw 109 and having a pointer 110 cooperating with a scale 111 secured to the flange of the bushing 94.

The modified form shown in FIG. 10 is the same as the first form, the same reference characters being used, except that the shaft 80 is cut in the middle and one end 80a is made adjustable axially relative to the main part which is adjusted by the screw shaft 90. The secondary axial adjustment for one end relative to the other is accomplished by providing a turnbuckle type screw 115 which is oppositely threaded into the ends of the shafts 80 and 80a and held in adjusted positions by a lock nut 116. It will be evident that when one end of the shaft is shifted axially relative to the other end it will change the wedge height at one end with the same result as that achieved in the other modification by changing shims under the wedges.

It will now be seen that the invention provides a convenient mounting for shield fingers which provides all needed adjustments both for individual fingers and the gang of fingers; that all needed adjustments, especially for paper thickness and paper wear and axial concentricity of the gang of fingers can be made at a convenient exterior location at any time; and that the finger mounting and adjusting mechanism is simple, sturdy and dependable.

While one embodiment of the invention and a modification have been described for purposes of illustration, it is to be understood that there may be various embodiments and modifications within the general scope of the invention.

I claim:

1. An adjusting device for ganged paper guide fingers in a corrugating single facer machine having a first corrugating roll, a second corrugating roll carrying the corrugated paper, a glue applicator roll, and a facer roll, comprising in combination: laterally spaced side plates swingably mounted on journals and supported by side frames, said journals on an axis located at an elevation above the axis of said second corrugating roll, said side plates having a transverse bea-m extending therebetween, a plurality of arcuate guide shield fingers mounted on said beam and embracing the periphery of said second corrugating roll, said fingers being disposed in axially spaced grooves in said first corrugating roll and in said applicator roll and being of a length to extend from a point near the corrugating roll nip to a point nearer the facer roll nip, with the applicator roll nip located intermediate the length of the fingers, means for adjusting at least one of said side plates along a line which is approximately parallel to the line of centers of said corrugating rolls to adjust the radial distance of said fingers at said nips, and separate means connecting at least one of said side plates for adjusting at least said one side plate along a line which is approximately perpendicular to said line of corrugating roll centers.

2. Apparatus as set forth in claim 1, wherein said first adjusting means comprises an eccentric on one of said journals supporting one of said side plates, and means for turning and holding said eccentric journal to make and hold the adjustment.

3. Apparatus as set forth in claim 1, wherein said first adjusting means comprises supporting shafts turnably mounted in said frames connecting said journals, the axes of said journals being eccentric to the axes of said shafts, and means for rotating one of said shafts and holding said shaft in the desired position.

4. Apparatus as set forth in claim 1, wherein said second adjusting means comprises means for adjusting both side plates together by the same amount.

5. Apparatus as set forth in claim 4, wherein said adjusting means comprises a transverse shaft connecting said side plates and said side frames with separate adjusting elements for each side plate.

6. Apparatus as set forth in claim 5, wherein said adjusting elements comprise wedges and in which said shaft is moved axially to vary the position of the wedges at both ends together.

7. Apparatus as set forth in claim 6, wherein means are provided for separately varying the position of a wedge at one end relative to the wedge at the other end.

8. Apparatus as set forth in claim 7, wherein said wedge varying means includes means for moving one end of the shaft and its wedge axially relative to the other end.

9. Apparatus as set forth in claim 1, including means for separately adjusting individual fingers in various turned positions around a radius from the center of said second corrugating roll to the center of the arcuate length of said fingers to align each finger in parallelism with the sides of said roll grooves.

10. Apparatus as set forth in claim 9, which also includes means for adjusting each of said fingers along the length of said beam to center them in the roll grooves.

11. An adjusting device for ganged paper guide fingers in a corrugating single facer machine having a first corrugating roll, a second corrugating roll, a glue applicator roll and a facer roll, comprising in combination: laterally spaced side frame members carrying said corrugating and facer rolls and said glue applicator roll, said glue applicator roll being mounted in accurate operating position to cooperate with said second corrugating roll, said first corrugating roll and said glue applicator roll having aligned grooves circumscribing their periphery at axially spaced points to receive guide shield fingers, a pair of laterally spaced side plates and a rigid beam secured between said side plates, eccentrically mounted journals supporting said side plates on said side frame members on an axis located at an elevation near the top of the first corrugated roll and near but slightly below the line of centers through the axes of said corrugating rolls, means carried by one of said side frame members near the lower end thereof for guiding one of said side plates to prevent side swinging movement of said beam, adjustable means for each side plate at the adjacent side frame providing resilient resistance to rearward movement, an axially movable wedge shaft mounted in guides in said side frame members and having mutual wedge operating means with said side plates acting against said resilient adjusting means, shafts mounting said eccentric journals, an adjusting arm connected to one of said eccentric mounting shafts to turn it, means to adjust and hold said arms, said eccentric journal axis and said eccentric mounting shaft axis having a line of centers approximately perpendicular to the line of centers of said corrugating rolls to adjust one of said side plates along the line of centers of the corrugating rolls, a flange on said beam having a mounting surface aligned approximately normal to said line of centers of said co-rrug-ating rolls, a plurality of slide bases secured to said beam flange by screws, each in an oversized hole providing turning and axial movement, a slidable finger holder mounted on each slide base for movement along a line substantially normal to said line of centers of said corrugating rolls, means for adjusting said slide along said base and holding it in adjusted position, clamp means for holding a finger intermediate its ends in each holder, said wedge shaft being located where it will swing said frame and move said fingers along a line which is approximately normal References Cited UNITED STATES PATENTS 1,106,502 8/1914 Ferres 156473 2,232,365 2/1941 Bruker 118-44 2,711,206 6/1955 Shields 156473 2,797,661 7/1957 Leam-ing 156472 X 3,204,602 9/1965 Ferara 156473 X EARL M. BERGERT, Primary Examiner.

H. F. EPSTEIN, Assistant Examiner. 

1. AN ADJUSTING DEVICE FOR GANGED PAPER GUIDE FINGERS IN A CORRUGATING SINGLE FACER MACHINE HAVING A FIRST CORRUGATING ROLL, A SECOND CORRUGATING ROLL CARRYING THE CORRUGATED PAPER, A GLUE APPLICATOR ROLL, AND A FACER ROLL, COMPRISING IN COMBINATION: LATERALLY SPACED SIDE PLATES SWINGABLY MOUNTED ON JOURNALS AND SUPPORTED BY SIDE FRAMES, SAID JOURNALS ON AN AXIS LOCATED AT AN ELEVATION ABOVE THE AXIS OF SAID SECOND CORRUGATING ROLL, SAID SIDE PLATES HAVING A TRANSVERSE BEAM EXTENDING THEREBETWEEN, A PLURALITY OF ARCUATE GUIDE SHIELD FINGERS MOUNTED ON SAID BEAM AND EMBRACING THE PERIPHERY OF SAID SECOND CORRUGATING ROLL, SAID FINGERS BEING DISPOSED IN AXIALLY SPACED GROOVES IN SAID FIRST CORRUGATING ROLL AND IN SAID APPLICATOR ROLL AND BEING OF A LENGTH TO EXTEND FROM A POINT NEAR THE CORRUGATING ROLL NIP TO A POINT NEARER THE FACER ROLL NIP, WITH THE APPLICATOR ROLL NIP LOCATED INTERMEDIATE THE LENGTH OF THE FINGERS, MEANS FOR ADJUSTING AT LEAST ONE OF SAID SIDE PLATES ALONG A LINE WHICH IS APPROXIMATELY PARALLEL TO THE LINE OF CENTERS OF SAID CORRUGATING ROLLS TO ADJUST THE RADIAL DISTANCE OF SAID FINGERS AT SAID NIPS, AND SEPARATE MEANS CONNECTING AT LEAST ONE OF SAID SIDE PLATES FOR ADJUSTING AT LEAST SAID ONE SIDE PLATE ALONG A LINE WHICH IS APPROXIMATELY PERPENDICULAR TO SAID LINE OF CORRUGATING ROLL CENTERS. 